Environment Canada scientists say four major oilsands mines are releasing an average of about one-third more carbon dioxide per barrel of oil than they report
New federal research suggests greenhouse gas emissions from Alberta’s oilsands may be significantly higher than industry reports.
“We find a pretty significant difference,” said Liggio, whose paper is published in Nature Communications. The findings of industry underestimation echo those of a previous Alberta study, which found methane emissions from heavy oil facilities were much higher than thought. They also agree with many other studies that have compared bottom-up to top-down.
Industry has criticized such flyover measurements for only providing a snapshot of emissions instead of long-term data.
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